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Old 12 Jul 2008, 11:31 pm
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Default Why does my honda civic do this?

The idle seems to be extremely high when you come to a stop from going from high speeds. Meaning if you were going 60 on the highway and stopped the idle is high. Then when the idle is low it like goes up and down up and down. What can be wrong
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Old 12 Jul 2008, 11:46 pm
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the idle is not hard to adjust... also it could be the timing is off or the computer is going
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Old 13 Jul 2008, 12:01 am
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sounds like a vacuum leak.check all of those little tiny hoses under ur hood and connect the one that came loose.
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Old 13 Jul 2008, 12:16 am
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it's the oxygen sensor.they need changing about every 100k-120k usually.
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Old 13 Jul 2008, 12:31 am
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it`s tha gasoline..
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Old 13 Jul 2008, 12:46 am
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yeah sounds like a vaccumkeak those rubber hoses either crack and suck false and the line that is attached to doesnt get the vaccum normaly an emmission item check around were theres heat or sometnig against the firewall. if you cant find it get like a brake cleaner can something flammable spray it on the tips of the hoses or along the hoses if car's rpm shoots up that the area that you have a leak you can hear it but it takes a trained ear reason you want brake clean is because it evaporates quickly. if no leak it can be your throttle positioning sensor it goes right on the intake manifold that controls your rpms when your on idle no matter if you just stareted the car or came off the freeway.
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Old 13 Jul 2008, 01:01 am
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same happened to my civic when i first got it. just tune down your idle control valve and then reset the ECU. or just take it to a mechanic and he'll hook you up...or your just confused about how to drive a stick.i doubt it's the second, but still just take it in so that you can be sure it's fixed right the first time.
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Old 13 Jul 2008, 01:16 am
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I think it could be a vaccum leak. This happened to my mom's car a while back. Check under the hood to see if anything is loose. If nothing wrong under there, turn down idle control and rest ecu (as the answer above said). Try to check out all the possible options fist before thinking of sending to a mechanic. You can also try to fix it yourself. You can save money by doing that. Best of luck and tell us what comes up.
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